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10.5. In-service Maintenance.
10.5.1. During in-service maintenance, the range finger is
checked for serviceable condition in accordance with Steps 1
through 10 of Table 9.1.
10.5.2.The unit is not to be dismantled during in-service
maintenance.
10.5.3. For the servicing scope, refer to Table 10.3.
Table 10.3.
Operations Procedure
as per
Materials, tools and
accessories
Servicing within
daily scope
Cleaning contacts
of charging device,
protection device,
wires and battery
section
Repair of packing
case (when so
required)
As in Table
10.2.
Para 10.6.1.
As in Table 10.2.
Absorbent optical cotton,
alcohol
Equipment, appliances and
tools available in repair
shop
10.5.4. During in-service maintenance, the cycle life of the range
finder may not be spent by more than10 measurements.
The length of each leg is adjusted by retracting or extending the
moving section. The coupling nut 4 must be loosened first to
change the leg length.
Stay block in the bottom of the head is designated to secure the
AI on a log, a stump, or any similar piece of wood suitable for
the job.
6. SAFETY PRECAUTIONS
6.1. Rangefinder LRB 20000 is an optical-electronic device
emitting high-density pulses of invisible light at wavelength of
1.06 µm, characterized by the following dangerous factors:
- direct laser radiation;
- mirror-reflected laser radiation;
- diffuse-reflected laser radiation.
Direct and mirror-reflected laser radiation of the
rangefinder is dangerous for naked eyes at 1700 m distance
and less.
Diffuse-reflected laser radiation is dangerous at 0.43 m
distance from reflecting surface.
Optical devices increase these distances in accordance with
optical device magnification ratio.
Laser energy at the output objective lens of the rangefinder
exceeds permissible level for skin by 16% and reaches
permissible level at 3.77 m distance from the rangefinder.